How long would it take you to notice if a female news anchor wore the same clothes for a year?

Viewers of Channel Nine's Today programme in Australia often criticised the dress sense of Lisa Wilkinson but ignored the attire of co-host Karl Stefanovic - despite the fact he'd been wearing the same suit for a YEAR.

Nobody noticed the stunt until he went public and revealed his experiment.

Frustrated by the scrutiny of his female colleagues' appearance, Stefanovic refused to change his "cheap Burberry knock-off" bought in London, swapping just his shirt and tie.

Only he, co-host Wilkinson and a producer knew what he was doing - and often remarked it was getting a bit "stinky".

"I'm judged on my interviews, my appalling sense of humor - on how I do my job, basically," said Stefanovic.

"Whereas women are quite often judged on what they're wearing or how their hair is."

According to The Age newspaper, Stefanovic is now auctioning the suit for the charity White Ribbon - Australia's only national, male-led campaign to end men's violence against women.

(Image: eBay)

"You can eliminate violence in a household in one generation," he said.

"It can start with a father saying to his young boys, 'It is not acceptable to hit a woman'."

"This issue needs to be addressed from the highest levels of society in terms of the law and the way our perpetrators are sentenced.